{
 "ocl_version": "0.1.0",
 "name": "Discovered lane (47.7680, 13.2079)",
 "slug": "discovered-lane-47-7680-13-2079",
 "confidence": "B",
 "reported_claims": [],
 "ladder": [
  {
   "window_m": 2.0,
   "max_gradient_pct": 27.2770745553089,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 8.0,
   "end_distance_m": 10.0,
   "start_elevation_m": 817.1075358524818,
   "end_elevation_m": 817.6530773435879,
   "min_gradient_pct": -13.207245941669044
  },
  {
   "window_m": 3.0,
   "max_gradient_pct": 24.39076372038092,
   "diagnostic": true,
   "flags": [],
   "start_distance_m": 7.0,
   "end_distance_m": 10.0,
   "start_elevation_m": 816.9213544319765,
   "end_elevation_m": 817.6530773435879,
   "min_gradient_pct": -12.858116178252507
  },
  {
   "window_m": 5.0,
   "max_gradient_pct": 22.5909431453465,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 53.0,
   "end_distance_m": 58.0,
   "start_elevation_m": 824.0376065944497,
   "end_elevation_m": 825.167153751717,
   "min_gradient_pct": -11.5827757504303
  },
  {
   "window_m": 10.0,
   "max_gradient_pct": 21.46389410396864,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 49.0,
   "end_distance_m": 59.0,
   "start_elevation_m": 823.224142419683,
   "end_elevation_m": 825.3705318300798,
   "min_gradient_pct": -5.4189252796561505
  },
  {
   "window_m": 20.0,
   "max_gradient_pct": 20.526426307819747,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 39.0,
   "end_distance_m": 59.0,
   "start_elevation_m": 821.2652465685159,
   "end_elevation_m": 825.3705318300798,
   "min_gradient_pct": 1.6624106432306007
  },
  {
   "window_m": 25.0,
   "max_gradient_pct": 20.06681039252544,
   "diagnostic": false,
   "flags": [],
   "start_distance_m": 37.0,
   "end_distance_m": 62.0,
   "start_elevation_m": 820.8994990236495,
   "end_elevation_m": 825.9162016217808,
   "min_gradient_pct": 2.6135390643439678
  },
  {
   "window_m": 50.0,
   "max_gradient_pct": 18.44988178773383,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "start_elevation_m": 820.3956163162935,
   "end_elevation_m": 829.6205572101604,
   "min_gradient_pct": 4.9575293037328265
  },
  {
   "window_m": 100.0,
   "max_gradient_pct": 17.391479466678902,
   "diagnostic": false,
   "flags": [
    "canopy_or_structure"
   ],
   "start_distance_m": 37.0,
   "end_distance_m": 137.0,
   "start_elevation_m": 820.8994990236495,
   "end_elevation_m": 838.2909784903284,
   "min_gradient_pct": 8.218357873624313
  }
 ],
 "shape": {
  "ascent_concentration": 0.336,
  "concentration_window_frac": 0.25,
  "longest_pitch_10pct_m": 231.0,
  "shape_class": "sustained"
 },
 "length_m": 368.2498386655373,
 "start_elevation_m": 816.2751214963367,
 "end_elevation_m": 863.0045375302857,
 "endpoint_gain_m": 46.72941603394895,
 "overall_gradient_pct": 12.68959579270608,
 "accumulated_ascent_m": 47.46777098327061,
 "window_maxima": {
  "max_5m": {
   "gradient_pct": 22.5909431453465,
   "start_distance_m": 53.0,
   "end_distance_m": 58.0,
   "midpoint_distance_m": 55.5,
   "start_elevation_m": 824.0376065944497,
   "end_elevation_m": 825.167153751717,
   "start_xy": [
    4561737.49095773,
    2744718.2122347816
   ],
   "end_xy": [
    4561732.520524647,
    2744718.7551798928
   ]
  },
  "max_10m": {
   "gradient_pct": 21.46389410396864,
   "start_distance_m": 49.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 54.0,
   "start_elevation_m": 823.224142419683,
   "end_elevation_m": 825.3705318300798,
   "start_xy": [
    4561741.467332135,
    2744717.7781349393
   ],
   "end_xy": [
    4561731.526476284,
    2744718.864119277
   ]
  },
  "max_20m": {
   "gradient_pct": 20.526426307819747,
   "start_distance_m": 39.0,
   "end_distance_m": 59.0,
   "midpoint_distance_m": 49.0,
   "start_elevation_m": 821.2652465685159,
   "end_elevation_m": 825.3705318300798,
   "start_xy": [
    4561751.408187878,
    2744716.692150613
   ],
   "end_xy": [
    4561731.526476284,
    2744718.864119277
   ]
  },
  "max_25m": {
   "gradient_pct": 20.06681039252544,
   "start_distance_m": 37.0,
   "end_distance_m": 62.0,
   "midpoint_distance_m": 49.5,
   "start_elevation_m": 820.8994990236495,
   "end_elevation_m": 825.9162016217808,
   "start_xy": [
    4561753.397336268,
    2744716.4843752976
   ],
   "end_xy": [
    4561728.544143905,
    2744719.1892216443
   ]
  },
  "max_50m": {
   "gradient_pct": 18.44988178773383,
   "start_distance_m": 34.0,
   "end_distance_m": 84.0,
   "midpoint_distance_m": 59.0,
   "start_elevation_m": 820.3956163162935,
   "end_elevation_m": 829.6205572101604,
   "start_xy": [
    4561756.36672204,
    2744716.898650478
   ],
   "end_xy": [
    4561706.6742418,
    2744721.5782109094
   ]
  },
  "max_100m": {
   "gradient_pct": 17.391479466678902,
   "start_distance_m": 37.0,
   "end_distance_m": 137.0,
   "midpoint_distance_m": 87.0,
   "start_elevation_m": 820.8994990236495,
   "end_elevation_m": 838.2909784903284,
   "start_xy": [
    4561753.397336268,
    2744716.4843752976
   ],
   "end_xy": [
    4561656.085293785,
    2744734.5998778534
   ]
  }
 },
 "window_minima": {
  "min_5m": {
   "gradient_pct": -11.5827757504303,
   "start_distance_m": 363.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 365.5,
   "start_elevation_m": 863.6193456109804,
   "end_elevation_m": 863.0402068234589,
   "start_xy": [
    4561525.614836878,
    2744584.4522314663
   ],
   "end_xy": [
    4561527.15586275,
    2744579.695632497
   ]
  },
  "min_10m": {
   "gradient_pct": -5.4189252796561505,
   "start_distance_m": 358.0,
   "end_distance_m": 368.0,
   "midpoint_distance_m": 363.0,
   "start_elevation_m": 863.5820993514245,
   "end_elevation_m": 863.0402068234589,
   "start_xy": [
    4561524.072935932,
    2744589.2085466925
   ],
   "end_xy": [
    4561527.15586275,
    2744579.695632497
   ]
  },
  "min_20m": {
   "gradient_pct": 1.6624106432306007,
   "start_distance_m": 247.0,
   "end_distance_m": 267.0,
   "midpoint_distance_m": 257.0,
   "start_elevation_m": 854.0813334886037,
   "end_elevation_m": 854.4138156172498,
   "start_xy": [
    4561569.090583706,
    2744685.041194525
   ],
   "end_xy": [
    4561557.816603786,
    2744668.5836862656
   ]
  },
  "min_25m": {
   "gradient_pct": 2.6135390643439678,
   "start_distance_m": 245.0,
   "end_distance_m": 270.0,
   "midpoint_distance_m": 257.5,
   "start_elevation_m": 853.9614444760924,
   "end_elevation_m": 854.6148292421784,
   "start_xy": [
    4561570.43308453,
    2744686.5236558346
   ],
   "end_xy": [
    4561556.222295448,
    2744666.0423914366
   ]
  },
  "min_50m": {
   "gradient_pct": 4.9575293037328265,
   "start_distance_m": 240.0,
   "end_distance_m": 290.0,
   "midpoint_distance_m": 265.0,
   "start_elevation_m": 853.5427770320163,
   "end_elevation_m": 856.0215416838827,
   "start_xy": [
    4561573.788731003,
    2744690.2303571887
   ],
   "end_xy": [
    4561544.120832393,
    2744650.1633974058
   ]
  },
  "min_100m": {
   "gradient_pct": 8.218357873624313,
   "start_distance_m": 244.0,
   "end_distance_m": 344.0,
   "midpoint_distance_m": 294.0,
   "start_elevation_m": 853.8793265038177,
   "end_elevation_m": 862.097684377442,
   "start_xy": [
    4561571.104318364,
    2744687.2649015016
   ],
   "end_xy": [
    4561520.347078974,
    2744602.655322346
   ]
  }
 },
 "diagnostic_window_maxima": {
  "max_2m": {
   "gradient_pct": 27.2770745553089,
   "start_distance_m": 8.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 9.0,
   "start_elevation_m": 817.1075358524818,
   "end_elevation_m": 817.6530773435879,
   "start_xy": [
    4561782.09790376,
    2744720.6277416544
   ],
   "end_xy": [
    4561780.118609612,
    2744720.340699166
   ]
  },
  "max_3m": {
   "gradient_pct": 24.39076372038092,
   "start_distance_m": 7.0,
   "end_distance_m": 10.0,
   "midpoint_distance_m": 8.5,
   "start_elevation_m": 816.9213544319765,
   "end_elevation_m": 817.6530773435879,
   "start_xy": [
    4561783.066580069,
    2744720.874499579
   ],
   "end_xy": [
    4561780.118609612,
    2744720.340699166
   ]
  }
 },
 "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.",
 "quality_summary": {
  "overhead_obstruction": {
   "obstruction_threshold_m": 2.0,
   "obstructed_fraction": 0.114,
   "obstruction_max_height_m": 30.16,
   "flagged_windows_m": [
    5,
    10,
    50,
    100
   ]
  },
  "review": [],
  "extent": [
   "may_start_earlier"
  ]
 },
 "provenance": {
  "analysis_version": "0.1.0",
  "run_manifest": {
   "manifest_version": "1",
   "code_git_sha": "8f4becd2ed8ab26772f5cd961ca7d1d0c2823252",
   "code_git_dirty": "false",
   "analysis_version": "0.1.0",
   "analysis_config_digest": "sha256:8c94015b54267da4",
   "python": "3.14.4",
   "numpy": "2.5.3",
   "rasterio": "1.5.1",
   "pyproj": "3.8.0",
   "laspy": "2.7.0",
   "shapely": "2.1.2",
   "pyosmium": "4.3.1",
   "libosmium": "2.23.1",
   "gdal": "3.12.4",
   "proj": "9.8.1",
   "run_id": "remeasure-valley-260921-at",
   "road_pbf": "batch-austria-chunk000.pbf",
   "region_key": "austria",
   "crs": "EPSG:3035",
   "elevation_provider_key": "bev-als",
   "tile_index": "cog-grid",
   "authority": "gip",
   "registry_pbf": "austria-2026-09-11.osm.pbf",
   "tile_index_snapshot": "sha256:b8dc649d37698355"
  },
  "sample_interval_m": 1.0,
  "interpolation": "bilinear",
  "smoothing": "none",
  "gradient_windows_m": [
   5.0,
   10.0,
   20.0,
   25.0,
   50.0,
   100.0
  ],
  "diagnostic_windows_m": [
   2.0,
   3.0
  ],
  "elevation_crs": "EPSG:3035",
  "elevation_resolution_m": 1.0,
  "elevation_tiles": [
   "data/cache/at/bev-als_dtm_E4561-N2744@20220915.tif"
  ],
  "calculated_at": "2026-09-22T00:05:10+00:00",
  "road_source": "OpenStreetMap (local PBF extract)",
  "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL",
  "osm_pbf_path": "output/valley-260921/at/batch-austria-chunk000.pbf",
  "osm_snapshot": "",
  "run_id": "remeasure-valley-260921-at",
  "elevation_provider": "BEV ALS DTM 1 m",
  "elevation_licence": "Creative Commons Attribution 4.0 (CC BY 4.0) \u2014 \u00a9 BEV / L\u00e4nder, data.gv.at",
  "elevation_dataset": "ALS DTM H\u00f6henraster 1 m (Bundesamt f\u00fcr Eich- und Vermessungswesen with the L\u00e4nder), EPSG:3035",
  "elevation_tile_ids": [
   "E4561-N2744"
  ],
  "elevation_blocks": [
   "N2700000E4550000@2022-09-15"
  ],
  "bev_dsm_release": {
   "N2700000E4550000": "20220915"
  },
  "route_base_cut_m": 142.0,
  "climb_origin": "discovered",
  "structure_own_ways": "none \u2014 the route carried no way list and no mapped way runs along it; own decks unmasked",
  "prior_doc": {
   "slug": "discovered-lane-47-7680-13-2079",
   "calculated_at": "2026-09-11T15:56:39+00:00",
   "code_git_sha": null,
   "analysis_version": "0.1.0",
   "run_id": "at-run2-260911",
   "path": "/root/uk-climbs/output/valley-260921/at/priors/discovered-lane-47-7680-13-2079/discovered-lane-47-7680-13-2079.json",
   "spans": 0,
   "sources": []
  },
  "carriageway": {
   "stations": 21,
   "stations_resolved": 21,
   "width_median_m": 4.0,
   "width_p10_m": 3.25,
   "width_min_m": 2.25,
   "width_max_m": 6.25,
   "bounded_share": 0.667,
   "unbounded_share": 0.333,
   "confidence_median": 0.649,
   "width_median_bounded_m": 4.25,
   "window_m": [
    37.0,
    62.0
   ],
   "width_at_max25_m": 3.75,
   "window_stations": 7,
   "single_track": false,
   "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule",
   "status": "ok",
   "source": "dtm",
   "station_m": 25.0,
   "window_station_m": 5.0,
   "halfwidth_m": 6.0,
   "step_m": 0.25,
   "level_tol_m": 0.12,
   "break_min_m": 0.3,
   "stations_failed": 0,
   "hedge_to_hedge": {
    "stations": 21,
    "stations_resolved": 21,
    "width_median_m": 4.25,
    "width_p10_m": 0.5,
    "width_min_m": 0.5,
    "width_max_m": 9.75,
    "bounded_share": 0.905,
    "unbounded_share": 0.095,
    "confidence_median": 1.0,
    "width_median_bounded_m": 4.0,
    "window_m": [
     37.0,
     62.0
    ],
    "width_at_max25_m": 3.5,
    "window_stations": 7,
    "status": "ok",
    "source": "dsm",
    "station_m": 25.0,
    "window_station_m": 5.0,
    "halfwidth_m": 6.0,
    "step_m": 0.25,
    "level_tol_m": 0.5,
    "break_min_m": 0.3,
    "stations_failed": 0
   }
  },
  "remeasured": {
   "on": "2026-09-22",
   "why": "valley-crossing extent re-measure 2026-09-22: low-to-summit (142.0 m -> 503.0 m)",
   "published_max25_pct": 20.07,
   "max25_pct": 20.07
  },
  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
 },
 "area": {
  "place": "Faistenau",
  "county": "Salzburg",
  "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)"
 },
 "review_flags": [
  {
   "kind": "possible-bridge-or-hollow",
   "span_m": [
    57.0,
    226.0
   ],
   "status": "pending-human-review",
   "noted": "2026-09-21",
   "figure_adjusted": false
  }
 ]
}